EP 1488269 A1 20041222 - COMPACT FOUR-MIRROR ANASTIGMAT TELESCOPE
Title (en)
COMPACT FOUR-MIRROR ANASTIGMAT TELESCOPE
Title (de)
KOMPAKTES VIERSPIEGEL-ANASTIGMAT-TELESKOP
Title (fr)
TELESCOPE ANASTIGMAT COMPACT A QUATRE MIROIRS
Publication
Application
Priority
- US 0308600 W 20030319
- US 10442302 A 20020322
Abstract (en)
[origin: US2003179443A1] An optical system comprises a three-mirror anastigmat including a primary mirror, a secondary mirror, and a tertiary mirror positioned to reflect a beam path. An intermediate image is formed on the beam path at an intermediate-image location between the secondary mirror and the tertiary mirror. A negative-optical-power field mirror is positioned in the beam path at a field-mirror location subsequent to the intermediate-image location along the beam path. The field mirror reflects the intermediate image to the tertiary mirror.
IPC 1-7
IPC 8 full level
G02B 17/06 (2006.01); G02B 23/14 (2006.01)
CPC (source: EP US)
G02B 17/0657 (2013.01 - EP US); G02B 23/14 (2013.01 - EP US)
Citation (search report)
See references of WO 03083549A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2003179443 A1 20030925; US 6767103 B2 20040727; DE 60317643 D1 20080103; DE 60317643 T2 20081030; EP 1488269 A1 20041222; EP 1488269 B1 20071121; IL 161179 A0 20040831; WO 03083549 A1 20031009
DOCDB simple family (application)
US 10442302 A 20020322; DE 60317643 T 20030319; EP 03745553 A 20030319; IL 16117903 A 20030319; US 0308600 W 20030319